A decrease of a communication throughput is suppressed even when a plurality of radio access technologies (RATS) coexist. A user terminal according to an aspect of the present disclosure includes: a receiving section that receives information on a UL/DL configuration in a second carrier; and a control section that determines start timing of the UL/DL configuration in the second carrier based on an offset between a frame boundary in a first carrier and a frame boundary in the second carrier.